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A blue train of mass 50 kg moves at 4 m/s toward a green train of 30 kg initially at rest. The trains collide. After the collision the green train moves with a speed of 3 m/s. What is the final speed of
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A blue train of mass 50 kg moves at 4 m/s toward a green train of 30 kg initially at rest. The trains collide. After the collision the green train moves with a speed of 3 m/s. What is the final speed of the blue train?

User Userspaced
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Explaination :

Momentum = mass x speed

p = (30 kg) (3 m/s)

p = 90 kg m/s
User Aria Pahlavan
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